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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
...EVALUATOR(fun, VARIABLE)
extern void NAME(mine)(char *x);
$ gcc -E xx.c
# 1 "xx.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "xx.c"
extern void mine_3(char *x);
$
Two levels of indirection
In a comment to another answer, Cade Roux asked why this needs two levels of indirection. ...
Finding local maxima/minima with Numpy in a 1D numpy array
... a module function from numpy/scipy that can find local maxima/minima in a 1D numpy array? Obviously the simplest approach ever is to have a look at the nearest neighbours, but I would like to have an accepted solution that is part of the numpy distro.
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How to create a colored 1x1 UIImage on the iPhone dynamically?
I would like to create a 1x1 UIImage dynamically based on a UIColor.
6 Answers
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How do you set, clear, and toggle a single bit?
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Setting a bit
Use the bitwise OR operator (|) to set a bit.
number |= 1UL << n;
That will set the nth bit of number. n should be zero, if you want to set the 1st bit and so on upto n-1, if you want to set the nth bit.
Use 1ULL if number is wider than unsigned long; promotion of 1UL <&...
Capitalize the first letter of both words in a two word string
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How does the bitwise complement operator (~ tilde) work?
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15 Answers
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Get week of year in JavaScript like in PHP
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19 Answers
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How to format strings in Java
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140
In addition to String.format, also take a look java.text.MessageFormat. The format less terse...
Transpose/Unzip Function (inverse of zip)?
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